Mixing valve



Patented Oct. 5, 1926.

EDWARD L. DELANY, OF

BROOKLYN, NEW YORK.

MIXING VALVE. v

Application led February 26. 1925. Serial No.,11,821.

My invention relates to improvements in mixing valves.

The object of my invention is'to provide a mixing valve particularlyadapted for 8 bath y purposes, whereby either cold, warm or hot watercan be drawn from a single spigot operated by a single lever, and at thesame time provide a valve whereby it is impossible to turn on scaldingwater upon the first part of the movement of the operating lever.

Another object of my invention is to providel a-valve of this characteradapted more particularly for shower baths-in which the valves arearranged withina recess in the wall, above the tub, and providing meanswhereby the opening is closed. and to .also

rovide means whereby any slight Variation 1n the distance the valve isset from the 30 outer face of the wall can be compensated for. and saidclosing plate serving as a dial. having the proper marking thereon toindicate when the valve is open or closed, and also,having point-smarked thereon indicating cold, warm and'hot water.

A further object of my invention is to provide a valve of this characterin which it is impossible for the plumber to assemble the valves in thecasing so that the -cold water valve will be transposed opposite the hotwater inlet, and thus prevent the liability of scalding by supplying hotwater to the valve when cold water is indicated by the valve operatinglever on the dial.

A still further object of my invention is to provide a valve of thischaracter in which both the hot and cold water valves, the dischargepipe and the hot and cold water inlet pipes. are so connected to thecasing that a smaller casing can be used, also eliminating all screwsand hand' finishing' and litting ofthe valvethe same being finished bymachine. thus reducing the cost of manufacture, and at the same timeprovide a simple,

cheap and effective mixing valve having certain details of structure andcombination ofl parts hereinafter more fully set. forth.

In the accompanying drawings Figure 1 is a horizontalsectional view of50.' my improved mixing valve showng it in position in the recess of thewall.

Figure 2 is a vertical sectional view taken on the line 2-2' of Figure1.

Referring now to the drawings. 1 represcnts the housing, which as shownin Figure 2 of the drawings. is of a.' cylindrical form,

having at its upper end a screw threaded vnipple 2 into which isthreaded the discharge pipe 3. This cylindrical housing has the lend 4provided with two openings through which 'the cold Iand hot water passesthereto, as hereinafter more fully described. The rear wall 4 of thehousing 1 is provided with an enlarged divided housing 5 and 5a formingthe cold water passage and the hot water passage'?, each of thesepassages have its outer end internally screw threaded as indicated at 8and 9, for receiving the upper ends of the hot and cold water pipes 10and 11, which are embedded in the wall. The forward end of thecasing isclosed -by the cover 12, held thereonby means of screws 13. as shown inFigure 1 ofthe drawings.' This cover is provided at its center with astuing box 13. having a packing 14 therein, adapted to be expanded bythe nut 15 aga-inst the valve operating shaft 16, all of which is wellunderstood and needs no further description.- The valve operating shaft16 is provided with an integral annular flange 17 resting in a recess 18in the inner face of the cover'12 below the stuft'- ing box, 'and thecoverl beyond this recess 18 Ais provided with an' annular screwthreaded recess 19,.into which is screwed the externally threaded nut20,which is adapted to bearagainst the flange 17 and hold the shaft 16against longitudinal movement, but to allow the free'rotaton thereof'.`This externally threaded nut 2O is provided with a rectangular opening21 to receive a correspondingly shaped wrench, whereby the same can bescrewed intoposition andremoved when desired.

The valve operating shaft beyond the an-y nular flange 17 is providedwith the threaded portion 22, the pitch ofthe threads being great. sothat upon the rotation of the shaft 16 the' valve operating membermounted thereon, will travel a considerabley distance during theoscillation of said shaft 16, as will be presently described. The rearwall 4 ofthe housing 1 is provided with an o ening 23 which is screwthreaded and into which is screwed the valve seat 24. This valvey seat24 has the raised seat 25, adapted to engage the washer 26, carried .bythe hot water valve 27. The valve 27 'has a screw threaded extension 28which passes through the washer 26, and has screwed thereonthe plug 29'which closelyi fits 'the walls ofthe valve seat 24, and is provided onlits cuter face with cut away portions 30, forming passages to allow thepassage of water. The outer end of the valve 27 is provided with anextension 31 having a transverse opening 32 therein, andv through whichthe trunnion 33 loosely passes. This trunnion 33 is carried by acylindrical member 34, screw threaded upon the threaded portion A22 ofthe valve operating shaft 16. The rear wall 4 of the housing is providedwith an opening 35 which communicates with the space 6, at the rear ofthe housing. This opening 35 is internally threaded to receive thethreaded portionv of the valve seat 36 and the valve seat has a raisedportion 37 adapted to engage the washer 38, carried byv the cold watervalve 39. This valve 39 has a screw threaded extension 40 passingthrough the washer 38, and upon which is screwed the plug 41. This plug41 has thel passages 42 arranged around its periphery and has a solidportion 43 at its outer end, all of which will be hereinafter more fullydescribed. The valve 39is provided with an extension 44 which isprovided with the opening 45 through which the trunnion 4G passes, thetrunnion being carried by the cylindrical member 34 screwed on thethreaded portion 22 of the shaft 16, on the opposite side from thetrunnion 33.

From the drawings it will be seen that the trunnion 46 is smaller andshorter than the trunnion 33 and thus the hot and cold water valves'cannot be interchanged so that hot water would be irst supplied to thehousing. `This point isvery essential, as plumbers often assemble thesevmixing valves so that hot water is first supplied to the housing, and aperson is often scalded, but by this structure it will be seen that thehot water valve can not be interchanged with the cold water valve. Toabsolutely insure this positioning of the valve, in the housing,l thehousing 1 is provided with a lug 47 upon its inner face, in a line withthe valve seats,- and the round projection 33 carrying the valve 28,being longer'than the trunnion 46, carrying the valve 37, the trunnion33 would engage lug 47 and thus the valves could not be inserted in any`position except that shown in Figure 1 of the drawings. l

In assembling valves of this character 1t often happens that the plumberhas placed the hot and cold Water pipes 10 and 11 at di iterentdistances from the outer face 49 of the wall, and therefore provision4has to be made so thatthe operating lever 50 can be placed on the" shaft16 at different points. 1n order to provide for this, the shaft 16 isprovided with elongated serrations 51, and said serrated portions areseparated by a series of annular grooves 52. The operating lever isprovided with a recess 53 havlng serrations corresponding with theserrations ating lever is more securely locked on the shaft. By havingthe annular grooves 52 it will be seen that the shaft 16 can be sawedoft' at a point through the annular grooves, and thus the serrationswill not be interrupted so that the operating lever 50 can be readilyforced upon the serrated portion of the shaft. The cover plate 54 isheld to the housing 1 by means of bolts 55, this can be readily clampedin position. The cover plate 54 has the proper marking thereon toindicate when the valve shaft is in position to supply cold, warm or hotwater, or when the water is cut off.

By this structure it will be seen that the plumber, when assembling thevalves, can not place the cold water valve on the trunl nion 33, as thesame is ot a diameter greater than the opening 45 in the extension ofthe cold water val-ve 37. The valves being assembled as shown, they cannot be placed in the housing 1 with the hot watervive in the cold watervalve opening, as the trunnion 33 is extended outwardly `and wouldengage the lug 47 carried by the housing and thus the parts can not-.beassembled or any other position than that shown in Figure 1 ofthedrawings.

In operation the valves are in the position shown in Figure 1 of thedrawings, and by turning the handle 5, the threads 22 carried by theshaft y16 will cause the member 34 to travel outwardly, carrying withit, by means of the arms 36 and 43, the two valves. Any` slight movementof the shaft 16 unseats'the washer 38 and allows the cold water to passthrough the passage 32 into/ the space surrounding the two valves, andoutwardly through the discharge pipe. A continued movement of theoperating lever-.5() causes .the hot water valve 29 to be moved out sovthat the passages 30, are brought into'a osition so that their upperends yare beyon the valve seat 25, and both cold and hot water isentering the space surrounding the valve and mixing therein, and warmwater is being discharged through the pipe 3. A contiued movement of thelever 50 moves the valves outwardly until the solid portion 43 of thecold water valve 37 is brought outwardly beyond thevalve seat and coldwa. ter is cut ofi, and at the same time moving the hot water valve 29further outwardly so that a greater supply of hot water passes throughthe passages 3() in the plug 29 of the Ahot water valve.

Having thus fully described my invention what ll claim is 1. A mixingvalve comprising a housing having hot and cold water inlets,communicating with an outlet, valves controlling the supply of waterfrom the hot and cold water inlets to the outlet, an operating meansadapted to operate the valve so that the 51 on the shaft 16 and wherebythe opercold water is first discharged from the outlet,'and a continuedmovement/of the lever allows warm water to pass from the outlet and thenhot water, and a connection between the operating lever andL the valves,

having a loose connection with the valves and so constructed that theycan not be interchanged, and said valves constructed and arranged tofirst admit cold water, then cold and hot water and hot water.

3. A mixing valve comprising a housing having] hot and cold waterIinlets, valves controlling the supply of water from thehot and coldwater inlets, and an outlet, an operating means for the valves andhaving 4a ,loose connection with the valves ofl different sizes, wherebythe valves can not be interchanged, and said valves'. constructed tofirst admit cold, then hot and cold water and then hot water, upon themovementv of the operating lever.

4. A mixlng valve comprising a housing 4having hot and cold waterinlets, an outlet intermediate the hot and coldl water inlets, .andcommunicating therewith, valves controlling the passages from the hotand cold water inlets to the outlet, an operating means having looseconnections'of different dimensions with the valves, whereby they cannot be interchanged, and said valveseconstru'cted and arranged upon themovement of the operatin lever to first ladmitl cold water, second co dand hot water and to cut olf the cold water and admit hot water.

5. AV mixing valve comprisingl a housing having hot and cold waterinlets, an voutlet intermediate the hot and cold water inlets,

and comunieating therewith, valves control-- ling the vpassages from thehot and ,cold

water inlets to the outlet, a single operating means having laterallyextending'trunnionsl of dii'erent sizes passing through openings `in thehot and cold water valves of correent sizes and .lengths passing throughopen-' ings in extensions carried by the cold and hot'water valvesofcorresponding sizes, and a projection carried by the housing whereby thehot and cold water valves can not be transposed.

7. A mixingvalve comprising a housing having hot and cold water inletscommunicating with an outlet, valves controlling the communicationbetween. Vthe hot and cold water inlets and theoutlet, a movable memberhaving two oppositely arranged lateral trunnions of difcrent sizes andlengths adapted t0 pass through openings of rcorrespondinD sizes in thevalve, and a lug car- `riedpby`the housing whereby the hot and coldwater valves can not bevtransposcd.

8. A mixing valve comprising a housing having hot and cold `Waterinlets, conimunieating with an outlet, valves controlling thevcommunication between the-hot and cold water inlets and the outlet, amovable -member having two oppositelyv arranged trunnions of differentsizes adapted to pass into. openings inuthe valves of correspondingsizes, and means foroperating said movable member. 4

9. A mixing valve comprising a housing having hot and cold water inlets,communicating with `an outlet, valves of di'lierent constructioncontrolling the hot and cold water inlets, a 'movable member havinglateral trunnions on opposite sides of ldifferent sizes, adapted to passthrough openings of corresponding sizes in the valves, and means foroperating said movable means whereby cold water is first discharged fromthe outlet, and a continued movement of the member allows warm water andthen hot water to pass from the outlet. v

- 10. A mixing valve comprising a housing having hot and cold waterinlets communicating with an outlet, valves of dierentconstructionscontrolling the communication between the hot and coldwater inletsand the outlet, a movable member carried by the housingintermediate the valves, outwardly extending trunnions carried by themovable member and of dierent sizes and lengths', and adapted to passthrough correspondingly size openings in the valves, and a lug carriedby the inner face of the ,housing whereby the longer trunnion willengage the lug tov prevent the valves from being placed therein in atransposed position.

' '11. A mixing valve comprising a housing having-hot and cold waterinlets, in conimu'nication with an outlet, valves of different lengthsand construction controlling the communication between the hot and coldwater inlets and the outlet, a movablemembermarried by the housingintermediate the valves, a lever moving said member outwardly andinwardly,` two oppositely arranged outwardly extending trunnionsofdiferent sizes .and lengths carried bythe movable members and passingthrough openings inv the valves of corresponding'sizes, a lug carried bythe inner walls oithe housing adapted toprevent the valves from beingtransposed by engagement of the longer trunnion With the lug.

12. mixing valve comprising` a housing having hot and cold water inlets,communicating with an outlet, valves controlling the communicationbetween the hot and cold water inlets and the outlet, a valve operatingshaft,an adjustable cover plate and dial earried by the housing, theouter end ot' the .operating shaft having an elongated serrated portioninterrupted by an annular recess whereby the same can be sawed oif, andan operating lever having a recess having corresponding serrationswhereby the lever is locked on the shaztt.A

13. A mixing valve comprising a housing, valves in said housing, asingle operating means Afor said valves, a cover plate adjustablycarried by the housing, an operating shaft extending through the coverplate and having an elongated serrated portion interrupted by annulargrooves, whereby a portion can be cut off, an operating handle having arecess provided with corresponding serrations adapted to receive saidserrated portion ot the shaft.

14. A mixing valve comprising a housing having hot and cold Watel`inlets communicating with an outlet, valves controlling the supply ofWater from the hot and cold water inlets to the outlet, an operatingmeans for the valves so constructed that the valves can not beinterchanged.

15. A mixing valve comprising a housing having hot and cold Waterinlets, and an outlet, valves controlling the supply of water from thehot and cold inlets to the outlet, an operating means for the valves,and having a connection therewith so constructed that the valves can notbe intel-changed.

16. A mixing valve comprising a housing having hot and cold Water inletscommunieating with an outlet, valves controlling the supply of Waterfrom the hot and `cold Water inlets to the outlet, and an operatingmeans having connections with the valves of diilferent dimensions,whereby the valves can not be`interchanged.

' 17. A mixing valve comprising a housing having hot and cold Waterinlets communicating with an outlet, valves controlling the supply ofwater from the hotl and Cold water inlets tothe outlet, and an operatingmeans having connections With` the valves of different diameters andlengths, whereby the valves can not be interehanged.

'In testimony whereof, I have signed this speeication.

EDWARD L. DELANY.

